Open main menu
Home
Random
Recent changes
Special pages
Community portal
Preferences
About Wikipedia
Disclaimers
Incubator escapee wiki
Search
User menu
Talk
Dark mode
Contributions
Create account
Log in
Editing
Orthogonal frequency-division multiplexing
(section)
Warning:
You are not logged in. Your IP address will be publicly visible if you make any edits. If you
log in
or
create an account
, your edits will be attributed to your username, along with other benefits.
Anti-spam check. Do
not
fill this in!
===Flash-OFDM=== ''Fast low-latency access with seamless handoff orthogonal frequency-division multiplexing'' (Flash-OFDM), also referred to as F-OFDM, was based on OFDM and also specified higher [[open systems architecture|protocol layers]]. It was developed by Flarion, and purchased by [[Qualcomm]] in January 2006.<ref>{{cite news |title= Qualcomm and Exoteq Sign OFDM/OFDMA License Agreement |date= August 1, 2007 |work= News release |publisher= Qualcomm |url= http://www.qualcomm.com/news/releases/2007/08/01/qualcomm-and-exoteq-sign-ofdmofdma-license-agreement |access-date= July 23, 2011}}</ref><ref>{{cite news |title= Qualcomm Completes Acquisition Of WiMAX Competitor |date= January 19, 2006|work=Network Computing |url= http://www.networkcomputing.com/wireless/229614067 |access-date= July 23, 2011}}</ref> Flash-OFDM was marketed as a packet-switched cellular bearer, to compete with [[GSM]] and [[3G]] networks. As an example, 450 MHz frequency bands previously used by [[Nordic Mobile Telephone|NMT-450]] and [[C-Netz|C-Net C450]] (both 1G analogue networks, now mostly decommissioned) in Europe are being licensed to Flash-OFDM operators.{{citation needed |date= July 2011}} In [[Finland]], the license holder Digita began deployment of a nationwide "@450" wireless network in parts of the country since April 2007. It was purchased by Datame in 2011.<ref>{{cite web |title= Briefly in English |work= @450-Network web site |publisher= Datame |url= http://www.datame.fi/index.php?id=30 |access-date= July 23, 2011 |archive-url= https://web.archive.org/web/20120315210735/http://www.datame.fi/index.php?id=30 |archive-date= March 15, 2012 |url-status= dead }}</ref> In February 2012 Datame announced they would upgrade the 450 MHz network to competing [[CDMA2000]] technology.<ref>{{Cite journal |title=@450 siirtyy cdma2000-tekniikkaan - jopa puhelut mahdollisia |journal=[[Tietoviikko]] |author=Aleksi Kolehmainen |date=February 8, 2012 |url=http://www.tietoviikko.fi/kaikki_uutiset/450+siirtyy+cdma2000tekniikkaan++jopa+puhelut+mahdollisia/a773169 |archive-url=https://web.archive.org/web/20120210214658/http://www.tietoviikko.fi/kaikki_uutiset/450+siirtyy+cdma2000tekniikkaan++jopa+puhelut+mahdollisia/a773169 |url-status=dead |archive-date=February 10, 2012 |language=fi }}</ref> [[Slovak Telekom]] in [[Slovakia]] offers Flash-OFDM connections<ref>{{cite web |title= Mapy pokrytia |work= Slovak Telekom web site |url= http://www.telekom.sk/osobne/pomoc-a-podpora/servis-pre-vas/mapa-pokrytia/ |language= sk |access-date= May 30, 2012 |archive-date= May 31, 2012 |archive-url= https://web.archive.org/web/20120531053123/http://www.telekom.sk/osobne/pomoc-a-podpora/servis-pre-vas/mapa-pokrytia/ |url-status= dead }}</ref> with a maximum downstream speed of 5.3 Mbit/s, and a maximum upstream speed of 1.8 Mbit/s, with a coverage of over 70 percent of Slovak population.{{citation needed |date= July 2011}} The Flash-OFDM network was switched off in the majority of Slovakia on 30 September 2015.<ref>{{cite news |title= Slovak Telekom closed Flash-OFDM network|date= November 5, 2015 |work= ceeitandtelecom |url= http://www.ceeitandtelecom.com/news/252913/slovak-telekom-closed-flash-ofdm-network }}</ref> [[T-Mobile International AG|T-Mobile]] Germany used Flash-OFDM to backhaul Wi-Fi HotSpots on the Deutsche Bahn's ICE high speed trains between 2005 and 2015, until switching over to UMTS and LTE.<ref>{{cite news |title= Ins Netz bei Tempo 300 |date= December 23, 2014 |publisher= heise online |url= https://www.heise.de/ct/ausgabe/2015-2-ICE-Zuege-bekommen-schnelles-Internet-2500736.html |access-date= December 20, 2016 |archive-date= December 21, 2016 |archive-url= https://web.archive.org/web/20161221162556/https://www.heise.de/ct/ausgabe/2015-2-ICE-Zuege-bekommen-schnelles-Internet-2500736.html |url-status= dead }}</ref> American wireless carrier [[Nextel Communications]] field tested wireless broadband network technologies including Flash-OFDM in 2005.<ref>{{cite news |title= Nextel Flash-OFDM: The Best Network You May Never Use |date= March 2, 2005 |work= PC Magazine |url= https://www.pcmag.com/article2/0,2817,1770838,00.asp |access-date= July 23, 2011 }}</ref> [[Sprint Nextel|Sprint]] purchased the carrier in 2006 and decided to deploy the mobile version of [[WiMAX]], which is based on [[Orthogonal frequency-division multiple access|Scalable Orthogonal Frequency-Division Multiple Access]] (SOFDMA) technology.<ref>{{cite news |title= Sprint Nextel Goes To The WiMax |date= August 8, 2006 |author= Sascha Segan |work= PC Magazine |url= https://www.pcmag.com/article2/0,2817,2000732,00.asp |access-date= July 23, 2011 |archive-url=https://web.archive.org/web/20181130135655/https://www.pcmag.com/article2/0,2817,2000732,00.asp |archive-date=2018-11-30 }}</ref> Citizens Telephone Cooperative launched a mobile broadband service based on Flash-OFDM technology to subscribers in parts of [[Virginia]] in March 2006. The maximum speed available was 1.5 Mbit/s.<ref>{{cite news |title= Citizens Offers First "Truly Mobile" Wireless Internet in Christiansburg and other parts of the New River Valley |work= News release |publisher= Citizens Wireless |date= March 28, 2006 |url= http://www.citizens.coop/aboutus/newsreleases/TrulyMobileWireless.pdf |access-date= July 23, 2011 |archive-date= July 18, 2011 |archive-url= https://web.archive.org/web/20110718162144/http://www.citizens.coop/aboutus/newsreleases/TrulyMobileWireless.pdf |url-status= dead }}</ref> The service was discontinued on April 30, 2009.<ref>{{cite web |title= Thank you for supporting Citizens Mobile Broadband |year= 2009 |publisher= Citizens Wireless |url= http://www.citizens.coop/internet/mobilebroadband.shtm |access-date= July 23, 2011 |archive-url= https://web.archive.org/web/20110718162204/http://www.citizens.coop/internet/mobilebroadband.shtm |archive-date= July 18, 2011 |url-status= dead }}</ref>
Edit summary
(Briefly describe your changes)
By publishing changes, you agree to the
Terms of Use
, and you irrevocably agree to release your contribution under the
CC BY-SA 4.0 License
and the
GFDL
. You agree that a hyperlink or URL is sufficient attribution under the Creative Commons license.
Cancel
Editing help
(opens in new window)